HS Code Subheading

Yarn, synthetic; filament, monofilament (less than 67 decitex), of nylon or other polymides (not high tenacity or textured), single, twisted more than 50 turns per metre, not for retail sale, not sewing thread

5402.51 Subheading
Section XI — Textiles and textile articles

About HS Code 540251

This category specifically targets fine, single filament yarns made from nylon or other polyamides, characterized by a low decitex count (less than 67) and a significant twist level (more than 50 turns per meter). These yarns are not high tenacity or textured, meaning they offer a smooth finish but with enhanced strength, cohesion, and reduced pilling due to the higher twist. They are traded in bulk for industrial and textile manufacturing, not for retail or as sewing thread. Importers are typically manufacturers of fine hosiery, lightweight technical fabrics, specialized apparel linings, or delicate woven and knitted goods where the strength, fineness, and smooth hand of twisted nylon are essential. Exporters are specialized synthetic yarn producers with precision twisting capabilities. Key trade factors include the exact decitex, the precise twist count, and the specific polyamide type (e.g., Nylon 6, Nylon 6.6), which all influence the yarn's performance in high-demand applications requiring durability and a refined aesthetic.

Products Under This Code

Fine nylon monofilament yarn (high twist), polyamide hosiery yarn, lightweight technical nylon yarn, fine nylon lining yarn, specialized woven nylon yarn, fine knitted polyamide yarn, nylon fishing line yarn.

Real World Examples

Invista (nylon yarns for hosiery), Nilit (polyamide yarns), Asahi Kasei (nylon 6.6 yarns), Hyosung, Rhodia (Solvay).

Common Misclassification

Can be confused with 540249 (other synthetic monofilament, low twist) if the twist level is not accurately measured, or with 540231 (textured nylon yarn) if the non-textured aspect is overlooked.

Products Classified Under 5402.51

High twist nylon yarnHigh twist polyamide yarn

Related Codes

5402.11 Yarn, synthetic; filament, monofilament (less than 67 decitex), of high tenacity yarn of nylon or other polyamides, textured or not; of aramids, not for retail sale, not sewing thread 5402.19 Yarn, synthetic; filament, monofilament (less than 67 decitex), of high tenacity nylon or other polyamides, textured or not; other than aramids, not for retail sale, not sewing thread 5402.20 Yarn, synthetic; filament, monofilament (less than 67 decitex), of high tenacity yarn of polyesters, whether or not textured, not for retail sale, not sewing thread 5402.31 Yarn, synthetic; filament, monofilament (less than 67 decitex), textured, of nylon or other polyamides, measuring per single yarn not more than 50 decitex, not for retail sale, not sewing thread 5402.32 Yarn, synthetic; filament, monofilament (less than 67 decitex), textured, of nylon or other polyamides, measuring per single yarn more than 50 decitex, not for retail sale, not sewing thread 5402.33 Yarn, synthetic; filament, monofilament (less than 67 decitex), textured, of polyesters, not for retail sale, not sewing thread 5402.34 Yarn, synthetic; filament, monofilament (less than 67 decitex), textured, of polypropylene, not for retail sale, not sewing thread 5402.39 Yarn, synthetic; filament, monofilament (less than 67 decitex), textured, other than of nylon or other polymides, polyesters, or polypropylene, not for retail sale, not sewing thread 5402.44 Yarn, synthetic; filament, monofilament (less than 67 decitex), other than high tenacity or textured yarn, elastomeric, single, untwisted or twisted 50 turns or less per metre, not for retail sale, not sewing thread 5402.45 Yarn, synthetic; filament, monofilament (less than 67 decitex), of nylon or other polymides (not high tenacity or textured), single, untwisted or twisted 50 turns or less per metre, not for retail sale, not sewing thread

Industry

This code belongs to the Textiles & Clothing industry.

Trade Overview

China, Taiwan, and Italy are major exporters, with the USA, Germany, and Japan being significant importers for apparel and technical textile industries.

Frequently Asked Questions

What is HS code 540251?

HS code 540251 covers: Yarn, synthetic; filament, monofilament (less than 67 decitex), of nylon or other polymides (not high tenacity or textured), single, twisted more than 50 turns per metre, not for retail sale, not sewing thread. This category specifically targets fine, single filament yarns made from nylon or other polyamides, characterized by a low decitex count (less than 67) and a significant twist level (more than 50 turns per meter). These yarns are not high tenacity or textured, meaning they offer a smooth finish but with enhanced strength, cohesion, and reduced pilling due to the higher twist. They are traded in bulk for industrial and textile manufacturing, not for retail or as sewing thread. Importers are typically manufacturers of fine hosiery, lightweight technical fabrics, specialized apparel linings, or delicate woven and knitted goods where the strength, fineness, and smooth hand of twisted nylon are essential. Exporters are specialized synthetic yarn producers with precision twisting capabilities. Key trade factors include the exact decitex, the precise twist count, and the specific polyamide type (e.g., Nylon 6, Nylon 6.6), which all influence the yarn's performance in high-demand applications requiring durability and a refined aesthetic.

What products fall under HS code 540251?

Fine nylon monofilament yarn (high twist), polyamide hosiery yarn, lightweight technical nylon yarn, fine nylon lining yarn, specialized woven nylon yarn, fine knitted polyamide yarn, nylon fishing line yarn.

What are common misclassifications for HS code 540251?

Can be confused with 540249 (other synthetic monofilament, low twist) if the twist level is not accurately measured, or with 540231 (textured nylon yarn) if the non-textured aspect is overlooked.

How is HS code 540251 structured?

HS code 540251 is a 6-digit subheading under the Harmonized System. The first 2 digits (54) identify the chapter, digits 3-4 (02) identify the heading, and digits 5-6 (51) specify the subheading. This code is standardized globally by the World Customs Organization.